noun (used with a singular verb)
the branch of physics that deals with the behavior, structure, and component parts of atomic nuclei.
Origin of nuclear physics
First recorded in 1930–35
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
(functioning as singular) the branch of physics concerned with the structure and behaviour of the nucleus and the particles of which it consists
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
The scientific study of the structure and behavior atomic nuclei. See also neutron proton strong force.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.